For example, if the equipped creature "has flying as long as it's attacking," it will not gain flying, even if it attacks after Colossus Hammer becomes attached to it
There are other things to consider, like rarity, but those are the big factors you need to consider when making custom cards
How to Make a Custom Card There are a few things to consider when picking out your custom card: Color: What color will it be
Midgar, City of Mako Rating: 7/10 Midgar, City of Mako is my pick for the strongest of this rare town cycle
Black Kefkas Tower (Bolass Citadel) Rating: 9/10 Bolas's Citadel was a very real bomb when we first saw it in War of the Spark
While a little expensive at five mana, you quickly make that up by stealing everyones actual lands